Electric cut-out.



T. E. MURRAY.

, ELEUTBIC GUT-OUT.

nnmumn FILED DEC. so, 1908.

928,999. Patentad July 27,1000.

2 suns-ru n! 1.

Fig. l

Iiillllllllllllh iummumuv WINNIE?!" llllllll llllml 5 01mm 81W $513M {#0111213 T. E- MURRAY.

ELEGTRIO GUT-OUT.

APPLICATION rum) 1120.30, 1908.

928,999. Pa ented July 27. 1909.

2 SHEETS-SHEET 2.

mm E. MUR

BAY, OF New YonK, N. Y.

'No. 928,999. Specification Letter- Potent; Pntmtedl'ulf gj,'-1eoa.

Application filed-December so, 100:. sci-mm. 410,965,

- To whqmit may concern; t

' 'Be'itknoi mihzit l-(Tuomxs E.

'eitizenefthe Uziited State's, r'egi ingfetlNew; Yotkyinpthecounty of New York andSte'te. of New York, have inyent'edffa certain flaw and'ueefu'l Improvement in Electric" Gut- Oute of. which the following is a specifics,- tion..-..,ffi I The invention relates to electric cut out and ,eon's'ists in the novel construction of the .fu'sepl ugfin the covering of the fuse infthe plug with aavmppih'g of fibrous incombuti- 1e material,@wherebyrupture of the plug on the-bldwiriglof the fuseis prevented; inthe detachable connection. of the plug and the plug holder; in ;the removable, plate for closmg the openings, provided for the introduc:

tion of the circuit conrli otors; in the meane 'forlocking plete, coveraml holder in place .20 err-the bi1Se, aI' 1d.in the'various-oon'ibinm v tio'r s aeniore particularly set forth in the 'c'il e ims"the object of tllewhole'being' tosimplify, el enpen zim'l-improye the device "mu-1.1.0 prevent :i rms's to its in'terfin] connectirmh. i i j .llr thenoeopipmiying drawings-Figure 1 is's'n top View of my cut out yxti'tlrthe cover in'pla-ce. Figl is a top View with the cover removal ';Fig. 3 is a section on the line in, x,

30 of FigIZ showing the eove f B and the plug implgee Ei-S iD Fi'gt 1-. Fig. 4, ontheleft -ugh mtdtpide isfdieotien the line z, 2!, of,"

MUR 5 y, z, of said figure. Fig. 6 shows sepnmtelv' 3 und'ig perspeetiv'e mic oftlie fugerplu js \i'ritliwthojeml oupsjnml fu'se. removed. Figqfi' 's'hows'said caps aiul 'fuse separately and in perspective; Fig. is a. bottom view in per-"' 'bo'iholder, also of 'pordelni-n, comprises in. flat side at the toldm plate base A,'so that the cap plates P "on e hplug O 7, 491% two ribs-E, Feud-a1 cross rib dzWhlCh-fOF-Ifl two' 'dgveteilebekets I,-J.1 The fuse plugs K, L,

Rig, 5,. are formed =i n'teg'mIly -o .pomelain, and each isprovided'orrite upper side with flQYtllil'-p1 'Q]bction M eonstn otedto' slide ,ID lIQ oneof-the dovetail soeketb I dr-J. Two fpse plugs are,- in this'weyheld onthqu'ndr side of thehol'der gplate 0, one aoclget'I- end the other 'iirsoe'ket], {and it oh'i'rious that either or both of eaid-gplug's'cgn be at!- tached to ,=.0r removed jfro m the .aaid plate,

In eah plug is'a'o' lihdficeltlansverte ppening N .whrch receives the metal fuse etri'p Or On each side of'the plugare mecess Q to receive the-turned'bvet ends-of the metal pap plate I,- which cap plates earab "tend across the end feces 'o'flthe plug and: close 'the'exttemities of the ope' The. "fuse Strip 0 is connected at its-en, to-sa'id ""lates and the plates ere eonnee'ted-lto-the se plug by means-of struck up clips 20 en- "15' gaging in corresponding de r'eeeionia} formed in the recesses Q. .Be ore thefuse stri is inse'rtedin the opening N, itiia wpun'rl wit asbestos paper orother non c'ombustb ble Yielding -mi1terial, asshown at S, Fig, 4. Saicl paper envelop is used instead =0f the pulverized non-conducting material com.-

monly employed in cn-rtridgg fuses. It iseeves to prevent 't'lreshlic mq iqxploqinnllue belain l'llSB' plug, and so reyex ts Breakage of sziid"-plug, and bv varying the thiekneesflof' sriidienvelop, as yrincreaei ng or deereaeih'g the number. of layers orwlnqlingsyof the IL- pergri mn vary its shock nbgorbihg qfla ity to-isilitznnygiven conditions fli i wsM'lieii the-fuseplugs K, L are. t'nched to "the holder they are inserted; i3 gh 0 eningsoin 'tlie cnYer B into recseel, 2 in the are received between. the members 9 a pair of upwardly exteiidjng epring arms 3, 4. The arms 4 are bent horizontally and secured to the base A lay-bolts 5,,whicl1 bolts may also serve t'o=coimeet' branch circuitwires, lifit r'iliowh, to sliid: rennet The} arms 3 -rtre also bent horizontally and ure onnected by bolts ,6 to metal strips 7 on the under side of A plate Omiil en-iirc'he'd him'ctlo portion D, prefl -.-;e'r| ably integral therewith. Oh" the 'under the base, whiclrptrips are also Connected by Q p r assess bolts 8 to clips 9, in which clips the main circurt wires 10, 1-1 are secured.

- 'Th6 branch wires, not showmwhich connect with the horizontal portions of arms 4, 5 may enter thelmse through an opening 12 formed artly in said base and partly in the,

fla e o cover'B; On theopposite end of the use is'a receselB formed in the outer f faced the end .wflll T, and continued by an gpening in the cot er flange. In the end wall fi ere-openings 14, 15, and in the partition wall V which lies between'the main circuit -oonductors 10, 11 is an opening 16 in line I with opening 15. The object of openings 14 -55 held time recess. When" the branch vi-ires are led directly to the cli s Qtlnough the openings 14 and 15,16, 4:, e plate D is inserted and heldin like manner in the opening 12 in the other end of'thebox.

. 'At each-end of the base are upwardly ic jecting lu'gs ,W w ich pass through openings m the cover B when said cover is in place.

A locln'ng'bar X; having a head 17 at one and:

' and an aperture near the-other end, is passed through 0 eriir'lgs in said lugs and the openinglB in t e fuse pluq' handle, and is secured against withdrawal B y .the'shu-clrle of any suitable seal fastening 19 received in the aperture near its end. I

w The area. of are pliig holder 1m. 0 is to be.

sufficiently large to cause 't e late completely to cover the sockets in the ass which receive the fuse plugs, as shown in F' l:

The fuse plug,- F' 5, is a simple small b col:

of porcelain or li e-material and after the blowing of its contained lines, is intended to be thrown'aside and a new. one is'pro'vid'ed with new [use su. stituted.- The wrapping of the fuse strip with asbestos paper is an nn provement over. embedding said strip in a pulverized non-combustible material; since the thickness of the pa )er may be regulated at will, it affords amp e protection for the porcelain )lug' and 15 more conveniently applied. he inclined passage 21, Fig. '4, formed in the fuse lug is to permit the gas due to explosion o thefuse to esca e and mark the under side-of the handle, t us mdieating risua-ll'y the fact that the fuse has blown. The late Uclosesthe openings for the branch wires not in use, ans thus pre vents access through said openings to the interior of the base. Thesingle lockmgrod secures in place the fuse plug holder,. and

. socket,

fuse plugs thereon, the cover and the late at U, and any imauthorized removal of sai rod 1s indicated by the breakage of the seal fasten n19.-'

' n' a as u casin of fictile'r'na 1U tonal, metal terr iiin al 'at the ends thereof, a use strip in said casing and connected'at its ends to sa1d terminals; anda wrapp' of A brous incombustiblelznaterial' surrou iiding said fusestri and filling the said casing.

r 2. In an e 'ectric out out abase having a socket and circuit teiminals therein a fuse plug constructed to'enter and fit said socket anc make contact with said terminals, a use lug holder closing said socket, and a device Bl) or detaohably connecting, said plug' and holder.

3. In an electric out out a base having a socket and circuit terminals therein a fuse pint; constructed to enter and fit said socket as a" r. make contact with said terminals, a fuse =ug holder comprising a handle and a'boto'm plate the said bottom plate closing said socket, and means on the under side of said -plate'i'or detachahly engaging with said l'nso ml plug.

4. In an electric cut out a base ln'wing ii. socket and circuit terminals therein, a fuse plu constructed to enter said socket and malls contact with said terminals, a fuse plug holder comprising a handle and a bottom plate 'having'a dove-tail socket on its under side,; and a fuse pln having a dove tail projection constructor to enter said- 5. lnnn electric out out, a base having an opening for the introduction of circuit cunductors, a cover having 0. depending [laugh cut away to form part of said'o ening, a. re-.-

movahle plate constructed to enter and fit lbs said openin and means for locking -said date in sail opening and said cover on said lmso.

'7. In an electric cut out, a base having an opening with inclined edges for 'the introduction of circuit conductors, a cover h'avm a depending flange cut away to form-part0 said opening, a removable plate having in- 12 clined edges constructed to enter and fit sa d opening, and means for locking said plate in said 0 ening and said cover on said base.

8. iii an electric cut out} abasejmfmg an opening for the introduction of c rcuit co'nductors, a-cover having a as endin flange out awa to form 'art ofsai opening a nernovable f'plate con struc -ed to enter. ahd fit in said opening, a fuse plug holder, a. fuse plug reinovzihlv plate constructed to enter and tit carried by said holder, sealed in said base in the rvuoss formed by said shouldorund the and passing through an opening in saidcovr, ed 'es of the cut away portion of said flange, .and means f()I locking said cover, said plate aim means for locking said plate in place. 5 and said holder in dose. In tvstiinony whor oof I have aflixed my 15 9. In an electric cut out, a. base having signature in presence of two witnesses. openings in its end wall for the introduction THOMAS E. MURRAY. of circuit conductors and a shoulder below Witness-us: said openings, a covethaving a depending GERTRUDE T. PORTER, 1 flange cut away In exposo said openings, a' i MAY 1. .MCGARRY. 

